CN108048789A - Two phase stainless steel plasma anodic nitridation surface intensified technique - Google Patents
Two phase stainless steel plasma anodic nitridation surface intensified technique Download PDFInfo
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- CN108048789A CN108048789A CN201711069019.1A CN201711069019A CN108048789A CN 108048789 A CN108048789 A CN 108048789A CN 201711069019 A CN201711069019 A CN 201711069019A CN 108048789 A CN108048789 A CN 108048789A
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- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 75
- 239000010935 stainless steel Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 52
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 50
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 24
- 238000002360 preparation method Methods 0.000 claims abstract description 22
- 238000012986 modification Methods 0.000 claims abstract description 12
- 230000004048 modification Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 24
- 238000000137 annealing Methods 0.000 claims description 22
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 239000012298 atmosphere Substances 0.000 claims description 10
- 229910021529 ammonia Inorganic materials 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 9
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 claims description 6
- 238000005238 degreasing Methods 0.000 claims description 4
- 239000013049 sediment Substances 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000002285 corn oil Substances 0.000 claims description 2
- 235000005687 corn oil Nutrition 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 3
- 229910000727 Fe4N Inorganic materials 0.000 abstract description 2
- 230000018199 S phase Effects 0.000 abstract description 2
- 238000010009 beating Methods 0.000 abstract description 2
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000001556 precipitation Methods 0.000 abstract description 2
- 239000002344 surface layer Substances 0.000 abstract description 2
- 229920002472 Starch Polymers 0.000 description 10
- 235000019698 starch Nutrition 0.000 description 10
- 239000008107 starch Substances 0.000 description 10
- 238000005121 nitriding Methods 0.000 description 9
- 239000002904 solvent Substances 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- SHZIWNPUGXLXDT-UHFFFAOYSA-N ethyl hexanoate Chemical compound CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UBOXGVDOUJQMTN-UHFFFAOYSA-N trichloroethylene Natural products ClCC(Cl)Cl UBOXGVDOUJQMTN-UHFFFAOYSA-N 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 241000209149 Zea Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 235000019198 oils Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004094 preconcentration Methods 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
- C23C8/38—Treatment of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
- C23C8/26—Nitriding of ferrous surfaces
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F17/00—Multi-step processes for surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by subclass C21D or C22F or class C25
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The invention discloses a kind of two phase stainless steel plasma anodic nitridation surface peening skilled worker's skills, comprise the following steps：(1) two phase stainless steel surface preparation；(2) plasmaassisted anodic nitridation：Surface modification and intensive treatment carry out ultra hypoeutectoid, diphasic stainless steel disk using plasma asistance anodic nitridation technique, the two phase stainless steel after surface preparation is put into nitrogen treatment in anodic nitridation device；(3) anneal.The present invention can effectively inhibit the formation of brittlement phase, make disk surface layer to center portion that there is excellent tough cooperation, on the basis of even tissue, excellent in mechanical performance is ensured, reduce workpiece secondary deformation caused by temperature gradient to the greatest extent, damage can be roughened caused by processing surface to avoid " beating arc " and " edge effect " etc. simultaneously, the formation of white bright metastable compound S-phase is also helped simultaneously, inhibit the precipitation of the brittlement phases such as ε Fe2 3N and γ ' Fe4N, enable disk that there is higher hardness, wear resisting and corrosion resistance.
Description
Technical field
The present invention relates to a kind of metal surface enhanced technology, more particularly to a kind of two phase stainless steel plasma anodic nitridation
Surface intensified technique technology carries out surface modification using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel disk
With intensive treatment.
Background technology
At present the country starch separator be nozzle continuous discharge type disk centrifuge, the starch being mainly used in starch industry
Refined, pre-concentration, Protein Separation and recovery of starch etc. can be used for food, medicine, dyeization, the liquid solid two of the departments such as environmental protection
Phase separation, the technical process, such as kaolin such as concentration and recovery and clarification, the recycling of paper pulp, wastewater treatment etc..China's manufacture dish-style is formed sediment
The time of powder seperator is shorter, and major technique, which has from same kind of products at abroad, to be digested and assimilated.The dish-style of China's manufacture at present
The drum assembly of starch separator is made of multiple parts, and internal structure is complicated, not only assembles cumbersome, but also feed system is easy
It blocks, equipment runs ten days just necessary cleaning during shutdown rotary drums, can not realize three phase separation, greatly reduce equipment work efficiency.
Western developed country is more early in separation of solid and liquid area research, and also more comprehensively, completely, having substantial amounts of business should for current technology
Example, but the product price of these companies is prohibitively expensive, trouble, expense are also relatively high again for maintenance of equipment.
The maximizing of dish-style starch separator, intelligence, the application of multifunction, high-speed high-precision and property material are not
The development trend come, and the latest development direction of domestic starch separator, the necessarily update of dish-style starch separator product are changed
Generation.An importance of the material as research dish-style starch separator update new product, is closed be subject to many researchers
Note, wherein, surface modification and the reinforcement process of two phase stainless steel are studied, improves two phase stainless steel in large-scale disk centrifuge
Application power is that one of basis of following dish-style starch separator model change and following disk centrifuge component are used
One of developing direction of two phase stainless steel.
The content of the invention
The purpose of the invention is to provide a kind of two phase stainless steel plasma anodic nitridation surface intensified technique, use
Plasma asistance anodic nitridation technique carries out ultra hypoeutectoid, diphasic stainless steel disk surface modification and intensive treatment.
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique of the present invention, technical solution include following step
Suddenly：
(1) two phase stainless steel surface preparation：Main process includes：Degreasing, industrial cleaners cleaning, washing, drying；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, nitridation process parameter is controlled, partial pressure of ar gas 0.05-0.75Pa, nitrogen partial pressure 0.5-750Pa bias 35-2000V,
200-350 DEG C of nitriding temperature, when nitridation time 1-3.5 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in gas
Anneal in body atmosphere or vacuum environment, annealing temperature control in the range of 500-1100 DEG C, annealing rate control 5-100 DEG C/
s。
Preferably, the plasmaassisted technology described in step (2) is generated based on argon gas in low-voltage device, wherein
Ionization voltage is controlled between 20-40V, and ionization current is controlled between 10-180A.
Preferably, the nitrogen source in the anodic nitridation device described in step (2) can be nitrogen or ammonia or two
The mixed gas of person.
Preferably, the atmosphere described in step (3) can be one or more of nitrogen, argon gas or its
With the mixed gas atmosphere of one or more of hydrogen, ammonia.
Preferably, Nitrizing Treatment method nitriding temperature of the present invention is relatively low, temperature gradient is smaller, can effectively reduce
Nitrogen treatment causes the additional deformation that disk and rotary drum generate, and the two phase stainless steel after surface peening is especially suitable for a kind of corn
The two-phase stainless steel large-sized seperator disk of the media such as oil, water, sediment.
Compared with traditional nitridation technique, advantages of the present invention is：
(1) nitridation process parameter of the invention matching, must can effectively inhibit the formation of brittlement phase, make disk surface layer to the heart
Portion has excellent tough cooperation.Meanwhile ensureing even tissue, on the basis of excellent in mechanical performance, reduce to the greatest extent workpiece because
Secondary deformation caused by temperature gradient.
(2) Nitrizing Treatment method temperature of the invention is low, the cycle is short, infiltration layer is thicker and uniform, on the one hand can be to avoid " beating
Arc " and " edge effect " etc. are roughened damage caused by processing surface, aggravate fretting wear, on the other hand can be conducive to Bai Liang
The formation of metastable compound S-phase inhibits the precipitation of the brittlement phases such as ε-Fe2-3N and γ '-Fe4N, has disk higher hard
Degree, wear resisting and corrosion resistance energy；
(3) nitriding temperature of Nitrizing Treatment method of the invention is relatively low, temperature gradient is smaller, additionally it is possible to effectively reduce nitridation
Processing causes the additional deformation that disk and rotary drum generate, the two phase stainless steel after surface peening especially suitable for a kind of corn oil,
The two-phase stainless steel large-sized seperator disk of the media such as water, sediment.
Specific embodiment
In order to which the present invention is better described, attached embodiment is as follows.It is emphasized that embodiment is not meant to the present invention
Scope be limited in the condition of embodiment narration, the purpose of embodiment is the content that the present invention is further explained and its feasible
Property.
Embodiment 1：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：First two phase stainless steel is carried out with trichloroethylene solvent
Ungrease treatment and then cleaning 10 minutes is impregnated at 90 DEG C with industrial cleaners, then after washing, it is dry at 93 DEG C, both
Two phase stainless steel after surface preparation；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, control nitridation process parameter, partial pressure of ar gas 0.5Pa, nitrogen partial pressure 500Pa, bias 800V, 250 DEG C of nitriding temperature,
When nitridation time 1.5 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in nitrogen
Atmosphere is made annealing treatment in enclosing, and at 800 DEG C, annealing rate is controlled in 45 DEG C/s for annealing temperature control.
Embodiment 2：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：First two phase stainless steel is carried out with ethyl hexanoate solvent
Ungrease treatment and then cleaning 15 minutes is impregnated at 83 DEG C with industrial cleaners, then after washing, it is dry at 70 DEG C, both
Two phase stainless steel after surface preparation；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, nitridation process parameter, partial pressure of ar gas 0.05Pa are controlled, ammonia partial pressure 150Pa biases 200V, nitriding temperature 200
DEG C, when nitridation time 1 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in nitrogen
Gas and argon gas (volume ratio 1: 1) atmosphere are made annealing treatment, annealing temperature control at 1100 DEG C, annealing rate control 80 DEG C/
s。
Embodiment 3：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：Degreasing first is carried out to two phase stainless steel with acetone solvent
It handles and then impregnates cleaning 15 minutes at 70 DEG C with industrial cleaners, then after washing, it is dry at 93 DEG C, both obtain surface
Pretreated two phase stainless steel；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, nitridation process parameter, partial pressure of ar gas 0.3Pa, nitrogen and ammonia (volume ratio 2: 1) partial pressure 0.5Pa, bias are controlled
35V, 300 DEG C of nitriding temperature, when nitridation time 1.5 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in argon
Atmosphere is made annealing treatment in enclosing, and at 780 DEG C, annealing rate is controlled in 40 DEG C/s for annealing temperature control.
Embodiment 4：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：First two phase stainless steel is carried out with ethyl acetate solvent
Ungrease treatment and then cleaning 12 minutes is impregnated at 85 DEG C with industrial cleaners, then after washing, it is dry at 85 DEG C, both
Two phase stainless steel after surface preparation；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, nitridation process parameter, partial pressure of ar gas 0.4Pa, nitrogen and ammonia (volume ratio 1: 1) partial pressure 750Pa, bias are controlled
1900V, 280 DEG C of nitriding temperature, when nitridation time 2 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in nitrogen
It is made annealing treatment in gas, argon gas and hydrogen (volume ratio 2: 1: 1) atmosphere, annealing temperature control is at 500 DEG C, annealing rate control
System is in 10 DEG C/s.
Embodiment 5：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：Degreasing first is carried out to two phase stainless steel with acetone solvent
It handles and then impregnates cleaning 5 minutes at 90 DEG C with industrial cleaners, then after washing, it is dry at 70 DEG C, it is pre- both to have obtained surface
Treated two phase stainless steel；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
During makeup is put, nitridation process parameter is controlled, partial pressure of ar gas 0.75Pa, nitrogen partial pressure 300Pa bias 650V, nitriding temperature 350
DEG C, when nitridation time 1.2 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in nitrogen
Gas and argon gas (volume ratio 3: 1) atmosphere are made annealing treatment, annealing temperature control at 1000 DEG C, annealing rate control 100 DEG C/
s。
Embodiment 6：
A kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：First two phase stainless steel is carried out with trichloroethylene solvent
Ungrease treatment and then cleaning 10 minutes is impregnated at 80 DEG C with industrial cleaners, then after washing, it is dry under 40 DEG C of warm airs
30min had both obtained the two phase stainless steel after surface preparation；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel
Disk carries out surface modification and intensive treatment, and the two phase stainless steel after the surface preparation described in step (1) is put into anode nitrogen
Makeup is put, and controls nitridation process parameter, partial pressure of ar gas 0.2Pa, ammonia partial pressure 100Pa, biases 300V, 300 DEG C of nitriding temperature,
When nitridation time 3 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in nitrogen
It is made annealing treatment in gas, argon gas and ammonia (volume ratio 1: 2: 2) atmosphere, annealing temperature control is at 650 DEG C, annealing rate control
System is in 5 DEG C/s.
Claims (5)
1. a kind of two phase stainless steel plasma anodic nitridation surface intensified technique, the technical scheme comprises the following steps：
(1) two phase stainless steel surface preparation：Main process includes：Degreasing, industrial cleaners cleaning, washing, drying；
(2) plasmaassisted anodic nitridation：Using plasma asistance anodic nitridation technique to ultra hypoeutectoid, diphasic stainless steel disk
Surface modification and intensive treatment are carried out, the two phase stainless steel after the surface preparation described in step (1) is put into anodic nitridation dress
In putting, nitridation process parameter is controlled, partial pressure of ar gas 0.05-0.75Pa, nitrogen partial pressure 0.5-750Pa bias 35-2000V, nitridation
200-350 DEG C of temperature, when nitridation time 1-3.5 is small；
(3) anneal：By the two phase stainless steel after the plasmaassisted anodic nitridation surface peening described in step (2) in gas atmosphere
Enclose or vacuum environment in anneal, annealing temperature control in the range of 500-1100 DEG C, annealing rate control in 5-100 DEG C/s.
2. a kind of two phase stainless steel plasma anodic nitridation surface intensified technique according to claim 1, feature exist
In the plasmaassisted technology described in step (2) is generated based on argon gas in low-voltage device, and wherein ionization voltage controls
Between 20-40V, ionization current is controlled between 10-180A.
3. a kind of two phase stainless steel plasma anodic nitridation surface intensified technique according to claim 1, feature exist
In the nitrogen source in anodic nitridation device described in step (2) can be the mixed gas of nitrogen or ammonia or the two.
4. a kind of two phase stainless steel plasma anodic nitridation surface intensified technique according to claim 1, feature exist
In, the atmosphere described in step (3) can be one or more of nitrogen, argon gas or its in hydrogen, ammonia
One or more of mixed gas atmosphere.
5. a kind of two phase stainless steel plasma anodic nitridation surface intensified technique according to claim 1, feature exist
In the Nitrizing Treatment method reduces the additional deformation that nitrogen treatment causes disk and rotary drum to generate, the two-phase after surface peening
Stainless steel is suitable for a kind of two-phase stainless steel large-sized seperator disk of the media such as corn oil, water, sediment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711069019.1A CN108048789B (en) | 2017-11-02 | 2017-11-02 | Double-phase stainless steel plasma anode nitriding surface strengthening process |
Applications Claiming Priority (1)
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| CN114717507A (en) * | 2022-05-20 | 2022-07-08 | 西安理工大学 | Low-temperature ionic nitriding method for synchronously improving wear resistance and fatigue resistance of titanium alloy |
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